566686664401 has 48 divisors (see below), whose sum is σ = 688209359040. Its totient is φ = 462274176000.

The previous prime is 566686664399. The next prime is 566686664419. The reversal of 566686664401 is 104466686665.

It is a happy number.

It is not a de Polignac number, because 566686664401 - 2¹ = 566686664399 is a prime.

It is a super-2 number, since 2×566686664401² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (566686664701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21404310 + ... + 21430768.

It is an arithmetic number, because the mean of its divisors is an integer number (14337694980).

Almost surely, 2^566686664401 is an apocalyptic number.

It is an amenable number.

566686664401 is a deficient number, since it is larger than the sum of its proper divisors (121522694639).

566686664401 is a wasteful number, since it uses less digits than its factorization.

566686664401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26818 (or 26805 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 58.

The spelling of 566686664401 in words is "five hundred sixty-six billion, six hundred eighty-six million, six hundred sixty-four thousand, four hundred one".